To quote writers who inveigh against unjust taxation without first establishing whether Belloc's proposed taxation is unjust, is to be guilty of what in logic is called a petitio principii, that is, begging the question.

That they may fall into such wicked and abominable ways as shall render them altogether unmeet for that relation, according to the law of it, is that great argument, called petitio principii, which Mr Goodwin hath used in this case a hundred times.